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How do I test if a variable is a number in Bash?
...o use single brackets; [[ a -eq a ]] evaluates to true (both arguments get converted to zero)
– Tgr
Aug 28 '12 at 9:30
3
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How can I apply a function to every row/column of a matrix in MATLAB?
...or any particular case against simple for-loop, which might be faster then converting a matrix to cell array. Use tic/tac wrap to test.
– yuk
Feb 21 '10 at 23:13
5
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How to elegantly rename all keys in a hash in Ruby? [duplicate]
... I used this in as_json() call, and although the main attributes keys were converted to string, the options.merge(:methods => [:blah]) then that is a key in the map not a string.
– peterept
Mar 8 '13 at 1:04
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How to use a variable for the key part of a map
...(X):2]
For the value-part it's even easier, since there is no automagic "convert text to string" happening:
def map = [keyA:A, keyX:X]
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Java 8 stream reverse order
...t;Integer> list = Arrays.asList(1,2,3,4);
list.stream()
.boxed() // Converts Intstream to Stream<Integer>
.sorted(Collections.reverseOrder()) // Method on Stream<Integer>
.forEach(System.out::println);
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Java Class.cast() vs. cast operator
...ce and no conversion ever happens to objects (only primitive values can be converted using this syntax).
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In C# what is the difference between ToUpper() and ToUpperInvariant()?
...fferent cultures. The most known example is the Turkish example, for which converting lowercase latin "i" to uppercase, doesn't result in a capitalized latin "I", but in the Turkish "I".
As for me it was confusing even with the above picture (source), I wrote a program (see source code below) to se...
What's the difference between := and = in Makefile?
...ever, if the variable GCC is reassigned i.e
GCC=c++ then the ${CC} will be converted to c++ -W after the reassignment.
Conditional assignment ?=
Conditional assignment assigns a value to a variable only if it does not have a value
Appending +=
Assume that CC = gcc then the appending operator...
Which access modifiers are implied when not specified?
...ublic. Only transpiling will throw errors. Both public and private will be converted to <Object>.prototype.funcName
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String concatenation in Ruby
...he given object to str. If the object is a Fixnum between 0 and 255, it is converted to a character before concatenation.
so difference is in what becomes to first operand (<< makes changes in place, + returns new string so it is memory heavier) and what will be if first operand is Fixnum (&l...